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drm/amdgpu: add amdgpu.cg_mask and amdgpu.pg_mask parameters

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They allow disabling clock and power gating from the kernel command line,
which hopefully helps with diagnosing problems in the field.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Nicolai Hähnle <Nicolai.Haehnle@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nicolai Hähnle
2016-06-02 12:32:07 +02:00
committed by Alex Deucher
parent f4b373f41c
commit 395d1fb948
3 changed files with 13 additions and 0 deletions
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drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@@ -88,6 +88,8 @@ extern int amdgpu_powerplay;
extern int amdgpu_powercontainment;
extern unsigned amdgpu_pcie_gen_cap;
extern unsigned amdgpu_pcie_lane_cap;
extern unsigned amdgpu_cg_mask;
extern unsigned amdgpu_pg_mask;
#define AMDGPU_WAIT_IDLE_TIMEOUT_IN_MS 3000
#define AMDGPU_MAX_USEC_TIMEOUT 100000 /* 100 ms */